This WWF billboard uses an awning (a cover, sort of) to cast a shadow that rises throughout the day as the sun moves. If you are reading this on a feed reader, come see the video of the billboard in action.

Here's another billboard that similarly uses sun and shadows and a lot of aluminum pegs to advertise sunscreen. And another sun-shadow billboard for Volkswagen.

Coloribus: "Fido, a Canadian wireless provider, created the billboards in conjunction with Bos, Toronto to celebrate the holiday season and promote wireless video calling. They feature a man and a woman each projected onto separate buildings. Initially both are static and then suddenly the young couple begins to interact with one another as video is projected onto the buildings."

A solar-powered billboard for NEDBANK in South Africa won an award at Cannes Lions earlier in 2007

"Pacific Gas and Electric's new solar-powered billboard, just off Interstate-101 in San Francisco. The placard generates enough energy to power the household of a family of three to four people during the day." LiveScience, Curbed SF. Unveiled on December 4, 2007.

That giant face of Col. Sanders that KFC laid out in a desert a year ago can now be seen in Google Maps and Google Earth, which kind of answers the question about how often the satellite images are updated. The annotations people attach to locations in Google Earth are lovely, too.

This German campaign against drunk driving gives a new meaning to the word joystick:
"The Piss-Screen (the site's dead) is a pressure-sensitive inlay for urinals. The game is displayed on a screen above the urinal. We designed a driving game in the style of Need for Speed." The game would end with a crash and display a message to the effect that the player should take a cab home.

There was one other game art project with the similar input mechanics last year, only then the display was inside the urinal.

The Bad Billboard Project wants to change the world: "I see billboards that are unreadable, outdoor advertising that makes me less likely to buy something from the advertiser, and only once in a while a billboard that works. But rather than going on a rampage and burning down the offensive tripe, I can now just blog about it and work out my frustrations with no harm being done other than the potential embarrassment to the advertisers."